Terry McMahon, SIOR

Terry McMahon has represented clients in virtually all Commercial Real Estate segments, including industrial, retail, and office. His years in the marketplace, combined with transactional diversity experience will put you and your commercial real estate goals on the right path.


Terry McMahon, SIOR has been in the commercial real estate industry for over 30 years. McMahon first worked for The Harrigan Co., Inc. which later merged with The Boerke Company in 1997 where he has been a partner ever since. In the past, McMahon has been the President of the Wisconsin Chapter of Society of Industrial and Office Realtors (SIOR) and was the Director of the Southeastern Wisconsin Commercial Association of Realtors (CARW). Currently, McMahon is the Wisconsin SIOR Scholarship Chairman, Vice Chairman for the Discovery World at Pier Wisconsin, and the Nicolet High School Skiing Coach.

Though McMahon’s focus is typically on the industrial market, he does currently represent clients and properties across all commercial real estate segments. Some well-known transactions he has been involved in include the sale of the Pabst Brewery properties, the relocation of Joy Global to downtown Milwaukee, the sale of St. Anthony’s Hospital properties, and the past sale of the Northridge Mall facility.


B.B.A. from the University of Wisconsin – Eau Claire


  • Chairman – Marine Operations – SV Denis Sullivan
  • Founder/Vice Chairman Discovery World at Pier Wisconsin
  • Head Coach of Nicolet High School Ski Team
  • Former Member of the Board of Directors of the Rotary Club of Milwaukee
  • Past Commodore of Milwaukee Yacht Club
  • Past President of Heiliger Huegel Ski Club



  • American Pasteurization Company
  • C.G. Schmidt
  • Cook Composites and Polymers, Inc.
  • Coss Development Corporation
  • Great Lakes Packaging Corporation
  • Joy Global, Inc.
  • Michael, Best & Friedrich, LLP
  • Nelson Container Corporation
  • PJL Group
  • Runzhiemer International
  • Sargento Cheese Co.
  • Stark Investments
  • Taylor Electric
  • Gehl’s Guernsey Farms, Inc.
  • Wixon, Inc.